MAUDE Adverse Event Report: BOSTON SCIENTIFIC CORPORATION RELIANCE 4-FRONT; IMPLANTABLE LEAD

Model Number 0673

Device Problems Device Dislodged or Dislocated (2923); Material Integrity Problem (2978)

Patient Problems Device Overstimulation of Tissue (1991); Twiddlers Syndrome (4563)

Event Date 08/17/2023

Event Type  Injury  

Manufacturer Narrative

The product has been received for analysis.Upon completion of the analysis of the complaint device, if there is any further relevant information from the review, a supplemental report will be filed.

Event Description

It was reported that the patient with this right ventricular lead exhibited twiddlers syndrome and this lead got bent and dislodged as confirmed through x-ray.It was also noted that the patient experienced muscle stimulation.This lead was explanted and successfully replaced.This lead was returned for analysis.No additional adverse patient effects were reported.

Manufacturer Narrative

Upon receipt at our post market quality assurance laboratory, a thorough evaluation of the lead was performed.Testing was completed to assess lead electrical performance.Measurements throughout these tests were within normal limits.Microscopic inspections of the terminal pin assembly, lead body, and electrode tip found no anomalies.Laboratory testing was unable to reproduce the reported clinical observations and detailed analysis did not reveal any abnormalities.Laboratory analysis did not identify any lead characteristics that would have caused or contributed to the reported clinical observations.

Event Description

It was reported that the patient with this right ventricular lead exhibited twiddlers syndrome and this lead got bent and dislodged as confirmed through x-ray.It was also noted that the patient experienced muscle stimulation.This lead was explanted and successfully replaced.This lead was returned for analysis.No additional adverse patient effects were reported.The device was returned and analyzed.

• Brand Name: RELIANCE 4-FRONT
• Type of Device: IMPLANTABLE LEAD
• Manufacturer (Section D): BOSTON SCIENTIFIC CORPORATION; 4100 hamline avenue north; saint paul MN 55112
• Manufacturer (Section G): BOSTON SCIENTIFIC CORPORATION; road 698, lot no. 12; dorado PR 00646 -260; * 00646-2602
• Manufacturer Contact: timothy degroot ; 4100 hamline avenue north; saint paul, MN 55112 ; 6515826168
• MDR Report Key: 17666918
• MDR Text Key: 322466851
• Report Number: 2124215-2023-47321
• Device Sequence Number: 1
• Product Code: LWS
• UDI-Device Identifier: 00802526592867
• UDI-Public: 00802526592867
• Combination Product (y/n): N
• Reporter Country Code: US
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: Health Professional
• Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date: 10/05/2023

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: Yes
• Device Operator: Lay User/Patient
• Device Model Number: 0673
• Device Catalogue Number: 0673
• Device Lot Number: 194180
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 08/29/2023
• Is the Reporter a Health Professional?: Yes
• Initial Date Manufacturer Received: 08/17/2023
• Initial Date FDA Received: 08/31/2023
• Supplement Dates Manufacturer Received: 10/03/2023
• Supplement Dates FDA Received: 10/05/2023
• Was Device Evaluated by Manufacturer?: Yes
• Date Device Manufactured: 03/08/2023
• Is the Device Single Use?: Yes
• Is This a Reprocessed and Reused Single-Use Device?: No
• Type of Device Usage: Initial
• Patient Sequence Number: 1
• Patient Outcome(s): Hospitalization; Required Intervention
• Patient Age: 57 YR
• Patient Sex: Female